Opera-chair



`Nirnn STATES n'rnNT OFFICE.

SEYMOUR XV. PREGRINE, OF GRAND RAPIDS, MICHIGAN.

OPERA-CHAIR.

SPECIFICATION forming part of Letters Patent No. 464,388, dated December1, 1891.

Application tiled July 8, 1891. Serial No. 398,834. (No model.)

T0 a/ZZ whom, t may concern:

Be it known that I, SEYMOUR W. PERE- GRINE, a citizen 'of the UnitedStates of America, residing at Grand Rapids, in the county of Kent andState of Michigan, have invented certain new and useful Improvements inOpera-Chairs, of which the following is a speci- ,iication My saidinvention relates, particularly, to the structure which supports thebacks and seats of opera and similar chairs in which the seats aretilted and the backs movable with the seats.

The special objects of the invention are, first, to secure the movingparts so as to prevent rattling; second, to rnder the cons truction ofthe parts simple and economical and to facilitate the putting of theparts together, and finally to render them durable in use.

My invention is illustrated in the accompanying drawings, in which-Figure 1 shows afside elevation of a portion of the chair-standard, theseat-bracket and back-bracket being pivoted thereto. Fig. 2 representsthe end of the slotted arm connecting the movable back to theseat-bracket in cross-section. Fig. Sis a cross-section takenhorizontally on line of Fig. 1. Fig. 4 is a perspective view of the clipdetached. Fig. 5 is a view of the clip which holds the adjacent arms ofthe seat-back to the common supporting-frame, the frame being in sectionon line y y, Fig. 1. Fig. 6 is adetail sectional view on line z z, Fig.1.

In the drawings, A represents the frame or standard, which is usually ofcast-iron, which supports the ends of the seat. bracket or frame isshown at B. Itis pivoted at b and tilts on this pivot. Vhen it is downin the posit-ion to be used as a seat, it is in the position shown inFig. 1 and it is supported upon an elastic stop c, which works in thegroove or slot d. The bracket or frame of the seat-back is marked G. Itis pivoted at g on the upper part of the standard A. 'The parts hrepresent the connections to which the back is attached, it beingunderstood that the frame G is the part only to which one end of theback is fixed. This frame G extends downward, and the downward extensionbent forward, as shown at lo, forms an arm having The seat a verticalslot l, into which works a stud m on the inner face of the seat-bracket.The difficulty heretofore with this construction is that the stud workedloose in the slot of the arm and caused rattling. In order to preventthis I have provided a spring-piece o, the ends of this piece beingnotched, and the ends of the slot on one side are fitted to receive thenotched ends at points which are a sufficient distance from the oppositeside of the slot to allow a close iit for the stud, so that the studwill bear against the spring-piece when it is in place. The spring-pieceis sprung into place before the stud is introduced by means of suitablepliers, and when once in position is held firmly by its own tension, asWell as by the presence of the stud. The piece bears against the studand prevents any wabbling or rattling. The upper end of the frame hasalso a pivotal stud 19. The standard A is formed with ahalf-round seatinto which this stud tits, there being ordinarily one on each side, thestandard supporting the opposite ends of two seats. Above the half-roundbearing for the stud is a lug q, which receives the upper end of aclamping-piece fr'. The lower end of the clamping-piece has a hole whichregisters, when the piece is in place, with a hole tapped into theback-rail of the frame just below the half-round bearing. When the studsof the back-frames are in place in the half-round seat, the clamp isslippedunder the lug q at its upper end, and the lower end is broughtdown overthe studs or under surfaces of the studs, being also half-roundto'form a journal for the round studs. In construction I prefer to makethe bearing of the clamp a little less than halt'- round, so that it maybe clamped closely upon the journals or studs and hold t-he part tightlyin place.

In order to secure the frames against any lateral movement which woulddisplace the studs from their seats, I provide on the cap an ear s, 'oneon each side, which tits over the edge t of the back-frame, this edgebeing formed on a curve concentric with that of the stud-bearing, sothat it turns under the ear. This by simple means formsthe perfeotlysecure bearing for the back-frames, the same clamp serving for the frameon each side, and as the clampis brought down snugly IOO on the bearingthere can. be no rattling in the movement ot the seats and backs.

It Will be understood that the backs and seats move in unison in theordinary manner. The cap-piece also has lugs 3 3 at its lower end, whichlit on each side of the standard, and thus hold the cap against lateraldisplacement. At its upper end also the cap is Vheld laterally by anotch ,into which portion the lug q ts. The screw lO, Fig. G, whichholds the clip r to the standard, passes through an opening in a lug llo n the standard, and

a nuton the threaded end of the screw serves to hold the clip in place.

I claim as my inventionl. In combination, the seatbracket and back-framepivoted at separate points b and .19, respectively, the said partsextending into proximity to each other, a pin on one part entering anelongated slot in the other, and means to prevent play of said pinlaterally ofthe said slot, consisting of a spring-plate extendinglongitudinally of the slot and constituting a yielding bearing-Wall forthe pin, substantially as described.

2. In combination, the seat-bracket and back-frame separately pivotedand connected by a pin and slot, and means for preventing lateral playof the pin in the said slot, consisting of a spring-plate having notchedends sprung into the slot and extending longitudinally thereof andparallel with the Wall of the slot and fixed at both ends rigidly to thewall ot' the slot, the portion of the Wall intermediate of the springends extending awa-y f rom'the spring, substantially as described.

In combination, the standard having the bearing-socket and a projectionq, the tilting back-frame having a stud and the clampingclip having ahalf-round bearing for the said stud, said clip fitting under theprojection q at its upper end, and the screw for securing its lower endte the standard, substantially as described.

t. In combination, the standard, the backframe having a pivot-stud, andthe clamping? clip fitting over said stud and secured to the standard,said clip having an ear extending over the rounded edge of theback-frame, substantially as described.

5. In combinatiomthe standard, the backtrame having pintles, abearing-clip, a projection on the standard to engage the clip, a lug onthe clip to engage the standarchand means to hold the parts together,subst-antially as described.

6. In combination, the standard, the backframes, one on .each sidethereof, each having a pintle, and the clip itting over both pin-tlesandsecu red to the standardsaid clip engaging the back-frames andholding them vagainst lateral displacement.

In testimony whereof I affix my signature in presence of two Witnesses.

SEYMOUR WV. PEREGRINE. Witnesses:

JOHN L. BUCHANAN, E. J.- REUKER.-

